A point in a mixer channel strip where audio is split off from the main channel is referred as an aux. This signal is normally subject to the position of the channel fader, rising and lowering along with the fader position. However fader movement could be a distraction when sending monitoring information to players (often called a cue mix.) Therefore a switch is usually incorporated at the aux that allows the split off to occur pre or post the fader, thus by-passing any fader movements. Another use for pre-fade listen is for sending a signal to a processor without the source appearing at the main mix bus. Although the main fader is lowered, signal is still flowing along the aux to the desired destination